EP 1818421 A1 20070815 - Ferritic, niobium-stabilised 19% chromium stainless steel
Title (en)
Ferritic, niobium-stabilised 19% chromium stainless steel
Title (de)
Ferritischer, Niobium-stabilisierter 19% Chrom-Edelstahl
Title (fr)
Acier inoxydable ferritique dit à 19% de chrome stabilisé au niobium
Publication
Application
Priority
EP 06290231 A 20060208
Abstract (en)
The stainless steel contains the following elements in wt/%: carbon up to 0.03; manganese up to 1; silicon 0.3 - 1; sulfur up to 0.01; phosphorous up to 0.04; chrome 18 - 22; nickel 0.5; molybdenum up to 2.5; copper up to 0.5; titanium up to 0.02; zirconium up to 0.02; aluminum up to 0.02; niobium 0.2 - 1; vanadium up to 0.2; nitrogen up to 0.03; cobalt 0,005 - 0.05; tin up to 0.05; the rest being made up of iron and unavoidable impurities. The steel is poured as a semi-finished product, heated to over 1000 degrees C, hot and cold rolled and reheated to a temperature and for a duration that produce a completely recrystallised structure having a ferritic grain size of between 10 and 60 micrometres.
Abstract (fr)
Acier inoxydable ferritique, dit à 19%Cr stabilisé au niobium, dont la composition comprend, les teneurs étant exprimées en poids : C ‰ 0,03%, Mn‰1%, 0, 3‰S‰1%, S‰0,01%, P‰0,04%, 18%‰ Cr ‰22%. Ni ‰0,5%, Mo ‰2,5%, Cu‰0,5%, Ti‰0,02%, Zr‰0.02%, Al‰0,02%, 0,2%‰Nb‰1%, V‰0,2%, N ‰0,03%, 0,005% ‰Co‰0,05%, Sn‰0,05%,, étant entendu que : Ti + Al + Zr ‰ 0,030%, Cr + 5 Si ‰¥ 20%, Mo+3 (Nb- 7C- 7N) ‰¥ 1,5%, V +10 Ti ‰¥ 0,06%, le reste de la composition étant constitué de fer et d'impuretés inévitables résultant de l'élaboration
IPC 8 full level
C22C 38/26 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/28 (2006.01); C22C 38/30 (2006.01)
CPC (source: EP)
C21D 6/002 (2013.01); C21D 8/0273 (2013.01); C21D 9/0068 (2013.01); C22C 38/001 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/30 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/52 (2013.01); C21D 2211/004 (2013.01); C21D 2211/005 (2013.01); F01N 13/10 (2013.01); F01N 13/16 (2013.01); F01N 2530/04 (2013.01)
Citation (search report)
- [A] EP 1170392 A1 20020109 - KAWASAKI STEEL CO [JP]
- [A] US 4726853 A 19880223 - GRESSIN PASCAL [FR], et al
- [A] EP 0478790 A1 19920408 - NISSHIN STEEL CO LTD [JP]
- [A] US 4010049 A 19770301 - RAREY CHARLES R
- [A] EP 1083241 A1 20010314 - UGINE SA [FR]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1818421 A1 20070815; AT E417134 T1 20081215; DE 602007000326 D1 20090122; DK 1818422 T3 20090223; DK 1818422 T4 20121029; EP 1818422 A1 20070815; EP 1818422 B1 20081210; EP 1818422 B2 20120718; ES 2317629 T3 20090416; ES 2317629 T5 20121226; PT 1818422 E 20090130; SI 1818422 T1 20090430; SI 1818422 T2 20121130
DOCDB simple family (application)
EP 06290231 A 20060208; AT 07290039 T 20070111; DE 602007000326 T 20070111; DK 07290039 T 20070111; EP 07290039 A 20070111; ES 07290039 T 20070111; PT 07290039 T 20070111; SI 200730015 T 20070111